QT325S-25.000MDDJ-T

Overview

The QST QT325S-25.000MDDJ-T is a quartz crystal resonator operating at a fundamental frequency of 25 MHz. It features a frequency stability of ±20 ppm and a load capacitance of 18 pF. The component utilizes a surface-mount device (SMD) package with dimensions of 3.2 mm x 2.5 mm x 0.7 mm. It supports an operating temperature range from -40°C to +85°C and has an equivalent series resistance (ESR) of 50 Ohms.

Feature Summary

• Provides precise timing signals with high frequency stability for digital circuits
• Compact surface-mount design suitable for automated assembly processes
• Operates reliably across extended industrial temperature ranges

Applications

• Microcontroller clock sources
• Communication module timing references
• Embedded system oscillators

Procurement Notes

Verify the specific suffix 'MDDJ' against official QST documentation to confirm the exact frequency tolerance and load capacitance specifications. Ensure the ordering part number matches the required package dimensions and thermal characteristics for your application design.

Selection Notes

Select this component when a 25 MHz reference with ±20 ppm stability is required. Confirm that the 18 pF load capacitance aligns with the oscillator circuit design. Verify that the SMD footprint fits within the available PCB area constraints.

Part Context

This part belongs to the QT325S series of quartz crystals manufactured by QST. These components are designed for general-purpose timing applications requiring stable frequency generation in compact electronic devices.

Replacement Considerations

Check QST datasheets for alternative part numbers within the QT325S series that match the 25 MHz frequency, 18 pF load capacitance, and ±20 ppm stability requirements.